Nonmetals

{| style="float:right; margin-left:2.5em; margin-bottom:1.2em; font-size:95%; max-width: 450px; border:1px solid grey" | style=text-align:center|A periodic table extract |- | 450px| alt=A grid with 7 rows labeled periods "1" to "7" and 10 columns labeled as groups "1", "2", "3–11", and "12" to "18". ¶ Most cells represent one chemical element and are labeled with its 1 or 2 letter symbol in a large font above its name. Cells in column 3 (labeled "3–11") represent a series of elements and are labeled with the first and last element's symbol. ¶ Row 1 has cells in the first and last columns, wi

Compare properties if the three main categories in the periodic table